littelfuse.com

© 2020 Littelfuse

Revised: 12/08/20

Specifications are subject to change without notice.

Surface Mount Reed Switches

Ultra-Miniature > MISM-7

MISM-7 7mm Surface Mount Reed Switch

Description

The MISM-7 surface mount reed switch is a sub-miniature, normally open switch

with a 7mm long x 1.8mm diameter (0.276” x 0.071”) glass envelope, capable of

switching up to 0.25 Amps.

This reed switch is a surface mount version of the MITI-7. It has a high insulation

milliohms.

Agency Approvals

Agency

Agency File Number

Ampere-Turns Range

E47258

E471070

6 - 20AT

DEMKO 14 ATEX 1393U

6 - 20 AT

Switch Type

Contact Form

A (SPST-NO)

Materials

Body: Glass

Leads: Tin-plated Ni-Fe wire

Features

• Ultra-miniature surface mount

normally open switch

• Available sensitivity range 6-10 AT

• Capable of switching 170 Vdc or

0.25A up to 10W

Benefits

• Hermetically sealed switch

contacts are not effected by and

have no effect on their external

environment

• Zero operating power required

for contact closure

• Excellent for switching

microcontroller logic level loads

• Very low space requirement

Applications

• Position Sensing

• Level Sensing

• Meter Equipment

• Security

• Office Equipment

RoHS

Note: SPST-NO = Single-pole, single-throw, normally open

Electrical Ratings

W/VA - max.

10

Vdc - max.

Vac - max.

Vdc - min.

170

120

175

Carry

Adc - max.

Aac - max.

Adc - max.

0.25

0.18

0.50

Resistance

Contact, Initial

Insulation

Ω - max.

Ω - min.

0.150

Capacitance

Contact

pF - typ.

0.3

Temperature

Operating

°C

°C

-40 to +125

-65 to +125

Notes:

1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information.

2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details.

3. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.

4. Breakdown Voltage - per MIL-STD-202, Method 301.

5. Storage Temperature - Long time exposure at elevated temperature may degrade solderability of the leads.

Note: Contact Littelfuse for specific agency approval ratings.